Missing Telerik WinForms Control Plugin

Hi! I am trying to enable the Telerik WinForms Control Support (Version 10.20) plugin and it keeps telling me that I am missing a dependent plugin? I have gone back through the installation wizard and selected 'Repair/Modify' and nothing changed. Do I need to download it from somewhere or is it hiding in one of my local folders?



Screenshot of message attached.  Thanks!